How To Fix LAW2_MESSAGES183 - RFC error. System ID &1 is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: LAW2_MESSAGES - LAW 2.0 Message Class

• Message number: 183

• Message text: RFC error. System ID &1 is unknown

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message LAW2_MESSAGES183 - RFC error. System ID &1 is unknown ?

  The SAP error message LAW2_MESSAGES183, which indicates an RFC (Remote Function Call) error stating that "System ID &1 is unknown," typically arises when the system is unable to recognize or connect to the specified SAP system ID. This can occur in various scenarios, such as when trying to establish a connection to a remote SAP system or when executing a function that requires communication between systems.
  Causes:
  
  Incorrect System ID: The specified System ID (SID) does not exist in the SAP landscape or is misspelled.
  Configuration Issues: The RFC destination may not be correctly configured in the SAP system.
  Network Issues: There may be network connectivity problems preventing access to the specified system.
  System Down: The target SAP system may be down or not running.
  Authorization Issues: The user may not have the necessary authorizations to access the specified system.
  
  Solutions:
  
  
  Verify System ID:
  
  Check the System ID you are trying to connect to and ensure it is correct.
  Ensure that the SID is correctly configured in the SAP system.
  
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination that corresponds to the System ID in question.
  Test the connection to ensure it is working properly. If it fails, check the configuration settings.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing communication between the systems.
  Use tools like ping or traceroute to check connectivity to the target system.
  
  
  
  Check System Status:
  
  Verify that the target SAP system is up and running. You can check this through the SAP Management Console or by logging into the system directly.
  
  
  
  Review Authorizations:
  
  Ensure that the user account being used to establish the RFC connection has the necessary authorizations to access the target system.
  
  
  
  Check SAP Notes:
  
  Look for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: To manage and test RFC destinations.
  SICF: To check and manage HTTP services.
  ST22: To check for dumps that may provide more context on the error.
  
  
  
  Logs:
  
  Check the system logs (SM21) for any additional error messages or warnings that may provide more context.
  
  
  
  SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance, providing them with detailed information about the error and the steps you have already taken.
  
  
  
  By following these steps, you should be able to identify and resolve the cause of the RFC error LAW2_MESSAGES183.